Maintaining backward compatibility in server operating systems and programming languages

Eunuchs style server operating systems and many programming languages can maintain backward compatibility for long periods by avoiding breaking any existing APIs./nIn the case of introducing something new, the options are either to abandon it or label it as a separate entity while keeping the original one intact./nPython 2 vs. Python 3 is an example of a situation where backward compatibility was prioritized over making significant changes./nThere is a hesitation to break Python 2.